Inside the boundaries of a world that it strives to explain everything from a rationality full with principles able to give sense to the causes and their effects, as well as of the dense lattice of relationships that they play equally to people and things, we have that it is of vital importance to remark the place of the good and of the wickedness in the ontologic thing. For Baruch of Spinoza this it was a problem of first order that should be approached by the philosophical speech, because it would help to define the list of the understanding, of the passions and with it the feasibility of a world able to offer answers to the aggressions and violence accustomed to maneuver under the help of the religious, political and social power of shift.